<template>

  <div class="app-container" v-if="canList">
    <div class="filter-container">

      <el-select @change='handleFilter' class="filter-item input" clearable placeholder="类型"
                 style="width: 130px"
                 v-model="listQuery.type">
        <el-option :key="item" :label="item" :value="index" v-for="(item,index) in  typeOptions">
        </el-option>
      </el-select>
      <el-select @change='handleFilter' class="filter-item input" clearable placeholder="位置"
                 style="
                       width: 130px"
                 v-model="listQuery.site">
        <el-option :key="item" :label="item" :value="index" v-for="(item,index) in  siteOptions">
        </el-option>
      </el-select>

      <div style="display: inline-block">

        <el-button @click="handleFilter" class="filter-item" icon="el-icon-search" style="margin-left: 10px;"
                   type="primary"
                   v-waves>查找
        </el-button>
        <el-button @click="handleCreate" class="filter-item" icon="el-icon-edit" style="margin-left: 10px;"
                   type="primary" v-if="canSave">添加
        </el-button>
      </div>
    </div>

    <el-table :data="list" :key='tableKey' border fit highlight-current-row style="width: 100%;"
              v-loading="listLoading">
      <el-table-column align="center" label="序号">
        <template slot-scope="scope">
          <span>{{scope.row.id}}</span>
        </template>
      </el-table-column>
      <el-table-column align="center" label="图片名">
        <template slot-scope="scope">
          <span>{{scope.row.name}}</span>
        </template>
      </el-table-column>
      <el-table-column align="center" label="地址">
        <template slot-scope="scope">
          <span>{{scope.row.url}}</span>
        </template>
      </el-table-column>
      <el-table-column align="center" label="类型">
        <template slot-scope="scope">
                                                <span>

                         <el-tag :type="tagTypes[scope.row.type]">     {{typeOptions[scope.row.type]}}</el-tag>

                        </span>
        </template>
      </el-table-column>
      <el-table-column align="center" label="位置">
        <template slot-scope="scope">
                    <span v-if="scope.row.site!=null">
                         <el-tag :type="tagTypes[scope.row.site]">     {{siteOptions[scope.row.site]}}</el-tag>
                        </span>
        </template>
      </el-table-column>

      <el-table-column align="center" class-name="small-padding fixed-width" label="操作" width="230">
        <template slot-scope="scope">
          <el-button @click="handleUpdate(scope)" size="mini" type="primary" v-if="canUpdate">编辑</el-button>
          <el-button @click="handleDelete(scope)" size="mini" type="danger"
                     v-if="canSave">删除
          </el-button>
        </template>
      </el-table-column>

    </el-table>

    <div class="pagination-container" style="margin-top: 20px">
      <el-pagination :current-page="listQuery.page" :page-size="listQuery.limit" :page-sizes="[10,20,30, 50]"
                     :total="total" @current-change="handleCurrentChange" @size-change="handleSizeChange"
                     background layout="total, sizes, prev, pager, next, jumper">
      </el-pagination>
    </div>

    <el-dialog :title="textMap[dialogStatus]" :visible.sync="dialogFormVisible">
      <el-form :model="temp" :rules="rules" label-position="left" label-width="120px" ref="dataForm"
               style='width: 450px; margin-left:50px;'>
        <el-form-item label="图片名" prop="name">
          <el-input v-model="temp.name"></el-input>
        </el-form-item>
        <el-form-item label="地址" prop="url">
          <el-input v-model="temp.url"></el-input>
        </el-form-item>
        <el-form-item label="类型" prop="status">
          <el-select class="filter-item" placeholder="类型" v-model="temp.type">
            <el-option :key="item" :label="item" :value="index"
                       v-for="(item,index) in  typeOptions">
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="位置" prop="status">
          <el-select class="filter-item" placeholder="位置" v-model="temp.site">
            <el-option :key="item" :label="item" :value="index"
                       v-for="(item,index) in  siteOptions">
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="上148*63/图片350*右180/左370" prop="img">
          <el-upload
              :auto-upload="true"
              :before-upload="handleUpload"
              :data="qData"
              :file-list="imgList"
              :on-preview="handlePictureCardPreview"
              :on-remove="(file, fileList)=>handleImgRemove(imgList,file)"
              :on-success="(response, file, fileList)=>handleImgUploadSuccess(imgList,file)"
              action="http://upload.qiniup.com"
              list-type="picture-card"
              ref="imgUpload">
            <i class="el-icon-plus"></i>
          </el-upload>
        </el-form-item>

        <el-dialog :visible.sync="dialogVisible" append-to-body>
          <img :src="dialogImageUrl" alt="" width="100%">
        </el-dialog>
      </el-form>
      <div class="dialog-footer" slot="footer">
        <el-button @click="closeDialogForm">取消</el-button>
        <el-button @click="createData" type="primary" v-if="dialogStatus=='create'">确认</el-button>
        <el-button @click="updateData" type="primary" v-else>确认</el-button>
      </div>
    </el-dialog>
  </div>
</template>
<style type="stylus">
.filter-container {
  /*padding-bottom: 20px;*/
}

.filter-item {
  margin-bottom: 10px;
}

.filter-item.input {
  /*line-height: 60px*/
  margin-right: 10px;
}
</style>

<script>
import {list, remove, save, update} from '@/api/banner'
import waves from '@/directive/waves' // 水波纹指令
import {downExcel} from '@/utils/down.js'
import {domain, getToken} from '@/api/qiniu'
import {listToStrs, strsToList} from '@/utils/imgUtil'

import {mapGetters} from 'vuex'
import {hasAuth} from '@/utils/auth'

export default {
  name: 'test',
  directives: {
    waves
  },
  data() {
    return {
      tableKey: 0,
      list: null,
      total: null,
      listLoading: true,
      listQuery: {
        page: 1,
        limit: 20,
        order: 'id desc'
        , name: null
        , url: null
        , type: null
        , site: null
      },
      typeOptions: ["H5-公众号", "WX-小程序"],
      siteOptions: ["TOP-顶部", "LEFT-左边", "RIGHT-右边", "BOTTOM-底部"],
      tagTypes: ['info', '', 'warning', 'danger', 'warning'],
      temp: {
        id: null, name: null, img: null, url: null, type: null, site: null
      }
      ,
      dialogFormVisible: false,
      dialogStatus: '',
      textMap: {
        update: '修改',
        create: '新增'
      }
      ,
      // 存在图片
      dialogImageUrl: '',
      dialogVisible: false,
      imgList: [],
      rules:
          {
            name: [
              {
                required: false,
                message: '必填字段',
                trigger: 'change'
              }
            ]
            ,
            img: [
              {
                required: false,
                message: '必填字段',
                trigger: 'change'
              }
            ]
            ,
            url: [
              {
                required: false,
                message: '必填字段',
                trigger: 'change'
              }
            ]
            ,
            type: [
              {
                required: false,
                message: '必填字段',
                trigger: 'blur'
              }
            ]
            ,
            site: [
              {
                required: false,
                message: '必填字段',
                trigger: 'blur'
              }
            ]
          }
      ,
      downloadLoading: false,
      qData:
          {
            token: '',
            key: ''
          }
    }
  },
  activated() {
    this.getList()
  },
  computed: {
    ...mapGetters([
      'perms'
    ]),
    canSave() {
      return hasAuth(this.perms, 'banner:save')
    },
    canDelete() {
      return hasAuth(this.perms, 'banner:delete')
    },
    canUpdate() {
      return hasAuth(this.perms, 'banner:update')
    },
    canList() {
      return hasAuth(this.perms, 'banner:list')
    }
  },
  methods: {
    getList() {
      this.listLoading = true
      list(this.listQuery).then(response => {
        this.list = response.data.list
        this.total = response.data.total
        this.listLoading = false
      })
    },
    handleFilter() {
      this.listQuery.page = 1
      this.getList()
    },
    handleSizeChange(val) {
      this.listQuery.limit = val
      this.getList()
    },
    handleCurrentChange(val) {
      this.listQuery.page = val
      this.getList()
    },
    handleModifyStatus(row, status) {
      this.$message({
        message: '操作成功',
        type: 'success'
      })
      row.status = status
    },
    beforeFormShow(row) {
      this.resetTemp(row) // 更新数据
      // 存在图片
      this.initQiniu()

      // 存在图片字段转换图片地址显示
      this.initImgUrl()
    },
    afterFormShow(row) {

    },
    beforeFormCommit() {
      this.initImgName()// 图片转换
    },
    resetTemp(row) {

      this.temp = {}
      if (row) {
        this.temp = Object.assign({}, row) // copy obj
      }

    },
    handleCreate() {
      this.beforeFormShow()
      this.resetTemp()
      this.dialogStatus = 'create'
      this.dialogFormVisible = true
      this.$nextTick(() => {
        this.afterFormShow()
        this.$refs['dataForm'].clearValidate()
      })
    },
    handleDelete(scope) {
      this.index = scope.$index
      // this.beforeFormShow(scope.row)
      // this.temp = Object.assign({}, row) // copy obj
      this.$confirm('此操作将永久删除该记录, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        // this.$message({
        //   type: 'success',
        //   message: '删除成功!'
        // })
        this.deleteData()
      }).catch(() => {
        this.$message({
          type: 'error',
          message: '删除失败'
        })
      })
    },
    // 显示将图片名封装成可以展示状态集合
    initImgUrl() {
      this.imgList = strsToList(this.temp.img, domain)
    },
    // 关闭显示窗口 重置图片地址 防止错乱
    resetImgUrl() {
      this.imgList = []
    },
    // 上传或者更新的时候从图片链接中获取图片名字
    initImgName() {
      this.temp.img = listToStrs(this.imgList)
    },
    createData() {
      this.$refs['dataForm'].validate((valid) => {
            if (valid) {
              this.beforeFormCommit()
              save(this.temp).then(res => {
                this.temp = res.data
                this.list.unshift(this.temp)
                this.closeDialogForm()
                this.$notify({
                  title: '成功',
                  message: '创建成功',
                  type: 'success',
                  duration: 2000
                })
              })
            }
          }
      )
    },
    deleteData() {
      // const ids = [this.temp.id]
      const ids = [this.list[this.index].id]
      remove({ids: ids}).then(res => {
        // 从当前队列中移除
        this.list.splice(this.index, 1)
        this.$notify({
          title: '成功',
          message: '删除成功',
          type: 'success',
          duration: 2000
        })
      })
    },
    handleUpdate(scope) {
      this.index = scope.$index
      this.beforeFormShow(scope.row)
      this.dialogStatus = 'update'
      this.dialogFormVisible = true
      this.$nextTick(() => {
        this.$refs['dataForm'].clearValidate()
      })
    },
    updateData() {
      this.$refs['dataForm'].validate((valid) => {
            if (valid) {
              this.beforeFormCommit()
              update(this.temp).then(() => {
                this.list.splice(this.index, 1, this.temp)
                this.closeDialogForm()
                this.$notify({
                  title: '成功',
                  message: '更新成功',
                  type: 'success',
                  duration: 2000
                })
              })
            }
          }
      )
    },
    closeDialogForm() {
      // 存在图片
      this.resetImgUrl()
      this.dialogFormVisible = false
    },
    handleDownload() {
      this.downloadLoading = true
      import('@/vendor/Export2Excel').then(excel => {
        const tHeader = [
          '序号'
          ,
          '图片名'
          ,
          '地址'
          ,
          '类型'
          ,
          '位置'
        ]
        const filterVal = ['id'
          , 'name'
          , 'url'
          ,
          'type'
          ,
          'site'
        ]
        const data = this.formatJson(filterVal, this.list)
        excel.export_json_to_excel({
          header: tHeader,
          data,
          filename: 'table-list'
        })
        this.downloadLoading = false
      })
    },
    formatJson(filterVal, jsonData) {
      return jsonData.map(v => filterVal.map(j => {
            return v[j]
          }
      ))
    },
    // 存在图片
    handleUpload(file) {
      this.qData.key = new Date().valueOf() + file.name
    },
    initQiniu() {
      // 获取七牛配置
      getToken().then(res => {
        this.qData.token = res.data
      }).catch(error => {
        console.log(error)
      })
    },
    handleImgUploadSuccess(imgList, file) {
      imgList.push({name: file.response.key, url: domain + file.response.key})
    },
    handleImgRemove(imgList, file) {
      for (var fn of imgList) {
        if (fn.name === file.name) {
          imgList.splice(imgList.indexOf(fn), 1)
        }
      }
    },
    handlePictureCardPreview(file) {
      this.dialogImageUrl = file.url
      this.dialogVisible = true
    }
  }
}
</script>
